Heater



(No Mode 1.) 2 Sheets-Sheet 1.

IF. MQGARTY.

HEATER.

No. 552,483. Patented D60. 31, 1895.

WITNESSES. INVENTOI? A TTOHNE Y8.

ANDREW EGRMIAM. PHOTO-LUNG WASHIN GTON. DYC

(No Model.) F M OARTY 2 snet -sneet z.

HEATER.

" o 552,483, j Patented 11 6.31, 1895.

WITNESSES: INVENTOH Kw/, I By A TTOHNEYS.

ATENT OFFICE.

NITED STATES FRANK MOOARTY, OF MARTINS FERRY, OHIO, ASSIGNOR OF ONE-HALF TO CHARLES D. MOCARTY, OF WI-IEELING, WVEST VIRGINIA.

H EATER.

SPECIFICATION formingpart of Letters Patent No. 552,483, dated December 31, 1895. Application filed May 4,1895. Serial No. 548,105- (No model.)

552i: To all whom it may concern? in the lower part of the fire-box to insure Be it known that I, FRANK MCOARTY, of complete combustion. The fuel is introduced Martins Ferry, in the county of Belmont and into the fire-pot at the upper end thereof State of Ohio, have invented a new and Imthrough a channelF extending to the outside 55 proved Heater, of which the following isa full, of the heater, with the outer end closed by a clear, and exact description. door F.

The invention relates to hot-air furnaces; The top flange of the fire-pot C is provided and its object is to provide a new and imwith recesses or cut-outs C to permit the air proved heater which is comparatively simple to pass from the upper end of the chamber B 6c and durable in construction, very effective in into the spaces above the fire-pot, to then operation, and designed for use in street-cars mingle with the heat and gases generated by and buildings, and arranged for burning coal, the burning fuel in the said fire-pot. The gas, coke or other fuel without danger of acsmoke and gases pass from the upper end of cidentally spilling or discharging the burning the fire-pot over the apertured wall G through 15 fuel. the three channels G, G and G separated The invention consists of certain parts and from each other by hot-air flues H disposed details and combinations of the same, as will vertically, to cause a direct draft, as hereinbe fully described hereinafter and then pointafter more fully described. In the center ed out in the claims. channel G is arranged a valve I, secured at 20 Reference is to be had to the accompanying its lower end on a transversely-extending drawings, forming a part of this specification, shaft I, extending to the outside of the furin which similar characters ofreference innace, to carry at its outer end a handle 1 dicate corresponding parts in all the figures. adapted to be taken hold of by the operator Figure 1 is a side elevation of the improveto open and close the said valve I, to cause the 7 5 2 5 ment as applied to the under side of a car. smoke and gases to pass directly from the fire- Fig. 2 is a sectional side elevation of the same pot through the center channel G through a on the line 2 2 of Fig. 3. Fig. Sis a sectional smoke-pipe J when the valve I is open, or

plan view of the same on the line 3 3 of Fig. when the said valve is closed to cause the 2. Fig. 4 is a sectional plan view of an airsmoke and gases to pass to the side channels o chamber and its inlet-ducts, the section being G2 and G and the said smoke-pipe J. The taken on the line 4 4 of Fig. 2; and Fig. 5 is latter connects with a second smoke-pipe J a transverse section of the improvement on in the outer casing K attached to the casing the line 5 5 of Fig. 2. A, as is plainly shown in the drawings, the

The improved heater is provided Witha cassaid casing K forming with the casing A a 8 5 35 ing A, in which is formedachamberB adapted space for the passage of the air to be heated to receive the fire-pot 0, made in the usual by the burning fuel in the fire-pot C. conical shape, as illustrated in Fig. 2, so as to The casing K is provided directly under the form between its walls and the walls of the channels G, G and G with a transverselychamber B a space for the circulation of air, extending air-chamber L, into which open the 4o topreventbreakingofsaid fire-pot. Thelower air-ducts N and O, of which the air-duct N end of the fire-pot 0 extends upon a grate D extends forwardly, as is plainly shown in of any approved construction, below which is Figs. 1, 2, 3 and 4, while the other air-duct arranged an ash-pit E, securely attached to O is arranged at one side of the casing K and the lower end of the chamber B, as plainly inopens rearwardly, as indicated in Fig. l.

45 dicated in the drawings. The ash-pit F. is pro- A valve P arranged in the chamber L serves vided with the usual door E in the form of to open or close either of the ducts N or O- a damper to admit air to the ash-pit and to that is, when the car is traveling in a forward -the chamber B, grate-bars D and fire-pot 0. direction, then the ductNis opened to admit In the fire-pot itself are arranged openings O air to the chamber L, while the valve P 50 a short distance above the grate D, so that air closes the other duct 0. When the car ison can circulate from the chamber over the fuel the return trip, the valve P is changed so as to close the duct N, as indicated in dotted lines in Fig. 4, to open the duct to permit air to readily pass into the said duct. Thus, whether the car goes in a forward or backward direction, air will always be admitted into the chamberL to furnish a su fiieient supply of air to be heated to properlyheat thecar.

The valve P is secured 011 a vertically-disposed shaft P, j ournaled in suitable bearings in the chamber L and extending from the bottom thereof to the outside, the lower end of the shaft P carrying an arm P connected by a link P with a lever 1 fulcrumed on the duct N, as indicated in the drawings. The upper end of the lever P is connected by a rope P with the interior of the car, so that the conductor thereof upon pulling the said rope P can change the position of the valve P to open or close either of the ducts N or O.

The chamber L is connected at its sides and front with atop chamber L from which leads the flue L into the interior of the car, building or other place to be heated.

Now it will be seen that when the heater is in use, the air passing to the chamber L from either duct N or 0 passes around the chamber B and channels G, G and G, to finally reach the chamber L and the outer flue L Part of the air passes directly from the chamber L to the chamber L by the vertical fines II, forming a division-wall for the channels G, G and G The lever P is preferably provided with a weight P, so as to hold the valve P closed normally on the duct 0 until the operator pulls the rope P.

It will further be seen that should the firepot 0 crack or burst into pieces, then the gases of the burning fuel cannot pass into the air chambers and ducts, as the fire-pot is set in the chamber B separate from the said hot-air chamber and channels.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patent 1. A heater comprising a closed inner casing having a fuel opening in the upper portion of its front end, a fire pot in the casing, an ash pit therebelow, three channels extendin g rearwardly and downwardly from the upper edge of the fire pot, the side channels communicating at their lower rear corners with the middle channel, vertical parallel hot' air fines forming the walls of said flues next to the fire pot, a smoke outlet in the rear end of the easing in line with the middle chann e1, a damper hinged at its lower edge in the bottom of the middle channel to swing vertically into a perpendicular position and close direct draft through said middle channel or swing rearwardly and downwardly to open the middle channel and close the side channels, an outer casing spaced from and surrounding the inner casing, air inlets in the outer casing below the said three channels and a damper mechanism for said air inlets, substantially as described.

2. The combination with the inner casing containing the fire pot, of the outerhot air casing surrounding the said inner casing, air inlets being provided in one side wall and in the rear wall respectively of the outer casing, a horizontally swinging damper pivoted in the angle of the outer casing between said two inlets to close either one as maybe desired, a crank connected with the axis of said damper, a vertically rocking counterbalanced lever pivoted between its ends and linked at its lower end to the said crank to hold the damper closed over one inlet, and an operating device for said lever, substantially as described.

FRANK MCCARTY.

"Witnesses:

ELLIS D. LAsn, ANoN G. PAXSON. 

